18F-FDG PET-CT与99Tcm-MDP骨显像对骨转移瘤诊断价值的对比研究

目的比较18F-FDG PET-CT和99Tcm-MDP全身骨显像对骨转移瘤的诊断价值。方法经病理学证实为恶性肿瘤且临床怀疑合并骨转移的患者32例,均行全身18F-FDG PET-CT扫描和99Tcm-MDP全身骨显像(检查间隔时间在2周之内)。比较相同扫描野内两者对骨转移病灶检出的敏感性、特异性及准确性。结果PET-CT对骨转移瘤诊断的敏感性、特异性及准确性分别为94.9%、91.7%和94.1%,骨显像分别为96.2%、54.2%和86.3%。18F-FDGPET-CT对骨转移瘤的诊断特异性高于99Tcm-MDP骨显像,敏感性和准确性二者无显著差异。结论18F-FDG PET-CT与99Tcm-MDP骨显像相比,对骨转移瘤的诊断特异性较高,对肿瘤良恶性的鉴别优于骨显像。

Comparative Study of 18F - FDG PET - CT and 99Tcm - MDP Bone Scan in Detecting Bone Metastases

Objective To compare the diagnostic value of PET-CT and bone scintigraphy in bone metastases. Methods Thirty-two patients with malignant neoplasm confirmed by pathology were undergone18F-FDG PET-CT and bone scan within two weeks.The sensitivity,specificity and accuracy of PET-CT and bone scan in detecting the focus were compared at the same scan filed.Results The diagnostic sensitivity,specificity and accuracy with PET-CT were 94.9%,91.7% and 94.1%,respectively,and 96.2%,54.2% and 86.3% with bone scan,respectively.18F-FDG PET-CT and99Tcm-MDP bone scan were the same in detecting metastatic tumor of bone,but the specificity of18F-FDG PET-CT was better than99Tcm-MDP bone scan in detecting bone metastasis.Conclusion Compared with99Tcm-MDP bone scan,18F-FDG PET-CT is more specific and helpful in detecting bone metastases.